Find in a Kiehl's store

Activated C

A potent next-generation active, works faster than the leading dark spot ingredient. Penetrates rapidly to attack deep-set dark spots while preventing the formation of new discolorations for visibly more uniform skin tone and clarity.

White Birch Extract

A sugar derived ingredient known for its ability to restore hydration and nutrients to the dermis and epidermis layers of skin . This potent active increases skin elasticity levels and collagen production resulting in restored skin density, volume and thickness.

Peony Extract

Works synergistically with Activated C to facilitate the reversal of discoloration for skin clarity.

Activated C

A potent next-generation active, works faster than the leading dark spot ingredient. Penetrates rapidly to attack deep-set dark spots while preventing the formation of new discolorations for visibly more uniform skin tone and clarity.

White Birch Extract

A sugar derived ingredient known for its ability to restore hydration and nutrients to the dermis and epidermis layers of skin . This potent active increases skin elasticity levels and collagen production resulting in restored skin density, volume and thickness.

Peony Extract

Works synergistically with Activated C to facilitate the reversal of discoloration for skin clarity.

Rated 4 out of 5 by xchen great product
can only have results when you use it for a few months
been using it for a while only used half of the bottle
worth the price
can't wait to see the results after finishing the whole bottle
7/27/15

Rated 1 out of 5 by ORKiehlsFan Not for Me
I did not think this product worked at all for me. First off it is expensive. Secondly, it did not appear to lighten dark spots at all. I was very disappointed in this product!! But I do love other Kiehl's products!! Would not recommend this product to friends or purchase again myself.
7/21/15

Rated 1 out of 5 by MikeP Doesn't work and leaves sticky residue
I've used this product twice a day for over a month in combination with sunscreen and have not noticed any difference in my dark spots, even the lighter ones. Also, the serum leaves a sticky residue on my face. It's gross. It's definitely not worth any subtle or negligible effect it may have with continued use.
7/13/15

Rated 1 out of 5 by Sandy123 Didn't work for me!!
too expensive, and not worth!!! Can't see any change after I use a whole bottle.
7/7/15

Rated 2 out of 5 by cfal Didn't work for me
Much to my disappointment, this product didn't do anything to reduce my sun spots or dark acne marks even though I used half the bottle, applying once daily. In addition, I developed a new sun spot while using this product. I like the way it feels (goes on smooth, lightweight, makes my skin feel soft, non-oily), and I think it may have improved my overall skin tone, but I would not recommend it to reduce dark spots.
6/2/15

Rated 4 out of 5 by Morgan Good product but pricey
I bought this serum about 2 months ago after my face got several dark spots and acne scars on my cheeks. Result comes after 4 continuous weeks of using this product AM & PM. I think you need to give a little extra time for every Kiehls product to see the results since they claim to be "free of chemicals".
I really like the texture of the serum: fast absorption, light scent, non-greasy, and does not weigh your skin down. I have oily T-zone and this serum also helps control the oil in the area. I use this after the Calendula Herbal Extract Toner and it feels great.
The only concern I have for the product is it takes quite a long time to see the result and the price is a little too high.
5/26/15

Rated 1 out of 5 by wlm61 waste of money
a very expensive product with no results. I used this product for a year as directed.
5/13/15

Rated 5 out of 5 by amc5 Amazing
I received this as a sample and could not believe how fast my 2 dark spots lightened after only 2 days use in the am and pm. Highly recommend. Absorbs quickly. Will definitely continue using.
5/8/15